The difference between Gandorf and Green-clothed Gandorf is mainly reflected in physical characteristics, duties and roles, and symbolic meanings.
Physical Features: Gandalf is known for his trademark gray robe and long hair, especially his white hair and white beard, which make him look more like a wise man. On the other hand, the green Gandorf changed into a green robe for certain occasions, such as the hobbit's cave, in order to better integrate into the environment.
Roles and Roles: Gandalf, also known as "The Grey Gandorf", is a wizard sent on a mission to Middle-earth. His main duty was to help the suffering freedmen fight against the evil forces. The green-clothed Gandorf is an image or role that Gandalf takes in order to complete a task in a specific situation, such as in the home of the hobbit Bilbo Baggins, he is incarnated as the green-clothed Gandorf.
Symbolic Significance: Gandalf represents wisdom, strength, and goodness, he is the protector of the free people of Middle-earth, and the defender of peace. The green clothes Gandalf more reflect Gandalf's flexibility and adaptability in different occasions, and this change of image shows his diverse characteristics.
In general, the differences between Gandorf and Greencoat Gandorf are mainly reflected in physical characteristics, duties and roles, and symbolic meanings, but they both represent different manifestations of the same character in different situations.